What is the area of the shaded region? 32.1 km 32.1 km 21.4 km 21.4 km Write your answer as a whole number or a decimal rounded to the nearest hundredth. square kilometers

Q: Express each result to the proper number of significant figures  8.13 x 102+8.13 x 103 1.784 x…

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Q: A cubit is a measurement of distance from the ancient near east which is equivalent to about 1.5…

A: 1 cubit = 1.5 feet and  1 meter = 3.28 feet Calculations are done in the following step.

Q: Which of the following numbers has the greatest number of significant figures? 103.07, 124.5,…

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Q: Evaluate the following expression to the nearest whole number: 6⁶ × 6⁻⁴

A: Note: Since we solve one question at a time, we’ll answer the first question as the exact one wasn’t…

Q: Question attached

A: To write the result of the given mathematical expressions in the correct significant figures with…

Q: Write each of the following numbers as “ordinary” decimal numbers.   6.244 x 103   9.117 x 10-2…

A: The given scientific notation is 6.244 x 103, to write the ordinary decimal notation, the decimal…

Q: 5. Perform the following calculations using your calculator: a. (3.21 x 104) (6.59 x 103) = 6.24…

A: a. 3.21×104 ×(6.59×103)     =211539×103 b. 6.24×103/1.95×104     = 0.32

Q: What is value for x in the equation below? e(3.66x) = 101.8(8.90+1.04) %3D Note: Logarithms and…

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Q: logarithm number or significant figures? [3 min] A 2 В 2.0 С 2.00

A: Significant numbers help in expressing the digit or value of something with more accuracy. It starts…

Q: boiling point for liquid oxygen is 90.0 K. What is the boiling point in

A: We are given boiling point for liquid oxygen is 90.0 K.   We have to tell boiling point in…

Q: 1.30μm^2. Convert this to square meters.

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Q: For the graph shown below 45 40 35 30 ED 20 15 EB 10 2 10 What are the coordinates of point C: (1,9)…

A: A question based on general chemistry that is to be accomplished.

Q: The deepest point in the Mariana Trench is approximately 10.9 km. What is this depth in feet?  (1…

A: Given : depth in Km = 10.9 km

Q: A chemist makes 300. mL of potassium dichromate (K,Cr,0,) working solution by adding distilled water…

A: Answer:- This question is answered by using the simple concept of dilution of concentrated solution.…

Q: The following statements are correct regarding errors except Random errors are indeterminate but…

A: Systematic errors is a type of error , which does not arise by chance and is introduced due to…

Q: 1. Environmental component that restricts the number of individuals in a population (1 Point)

A: A limiting factor is anything that constrains a population's size and slows or stops it from…

Q: h. 917.2 - 45.63 = Answer: i. 3.423 x 10-4 6.42 x 10-3 = Answer: 3.1 j. 6.300 x 10² + 15.43 Answer:…

A: Step I :-  Rule for significant figuressf in mathematical operations:- I Addition and subtraction…

Q: Suppose that polluted air has carbon monoxide (CO) levels of 15.0 ppm. An average human inhales…

A: Given, CO level = 15 ppm = 15 Litre CO/106 litre air Human intake = 0.5 Litre of air/ breath Rate of…

Q: Compute the values. Express these answers to the hundredths place (i.e., two digits after the…

A: A common logarithm of a number is defined as a number in which a base of 10 must be raised to obtain…

Q: Part A [H3O+]=4.7 x 10-8 M Express your answer using two decimal places. pH = pH = [H3O+]=3.0 x 10-³…

A: pH : pH can be defined as the negative logarithm of H+ ion or H3O+ ion concentration pH = -log[H3O+]…

Q: Write the number of significant figures in the number on the line.           0.0240 ________…

A: We follow the below-assigned rules to find the number of significant figures in any measurement.

Q: What is the result of the following arithmetic operation? (1.369 + 0.56) / 20 = ? O 0.0964 O 0.096 O…

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Q: bleach, [OH ]= 2.9 × 10–3 M Express your answer using two significant figures. ΑΣφ a Xb

A: [ HO -] = 2.9 x 10-3 pOH= - log [ HO -] = -log 2.9 x 10-3 = 2.537   pH = 14 - pOH =(14 - 2.537  )…

Q: What is the result of the following calculation to the correctnumber of significant figures?(6.266 −…

A: (6.266 − 6.261) ÷ 522.0 = ( 0.005) ÷ 522.0 = 9.579 x 10-6  Number of significant figures are 4.

Q: Convert and use sig figs 254.3g to kg

A: The number of significant figures in the given problem is four, therefore the final result must…

Q: 0.15 M NAC2H3 O2 Express your answer to two decimal places. ? pH =

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Q: Which volumes below are equivalent to 3 mL. There may be more than a single answer. (1) 1…

A: We have to choose from the following given options have volume equivalent to 3mL as follows in step…

Q: The output of a plant is 4335 pounds of ball bearings per work-week (a work week = five days). If…

A: Given: Mass of each ball bearing = 0.0113 g Total mass of ball bearings formed in 5 days = 4335…

Q: Total surface size is dependent on particle size. The smaller the particles are: smaller the total…

A: We know  that as the size of the parcticle decreases, total surface area of the particle increases

Q: Solving Problems using a scientific approach.

A: There are six important point to solve a problem via scientific approach.

Q: In the picture below, determine how many circles with a radius of 0.5" can fit into a 5.0" box.…

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Q: Numbers which are not the results of measurements are not considered significant figures.   True or…

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Q: Express the result of each mathematical operation to the proper number of significant figures and…

A: a) The calculation is as follows: In the starting numbers, the minimum number of the significant…

Q: where did 6.022x10^23 came from in step 2 for this question

A: For the given problem: The number of moles of PbI2 is calculated first. Now, 1 mole = 6.022 x 1023…

Q: Antarctica has an area of 5,500,000 square miles. It is covered with ice, giving the continent an…

A: Density-ratio of mass and volume of given solution is called density. Formula, Density is measured…

Q: Kindly type your answer in percent, 2 decimal places. Do not include the % sign

A: given T1= 80oc T2= 0oc Kcl =100g WATER=12.60g find % of Kcl wasted

Q: Calculate the Normality of Hcl of a solution that contains 45 g in 325 ml of water, knowing that the…

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Q: 3- 1-6 x10 3.

A: The given question is: 1.6×10-86.0×103=? Solving 1.6/6.0: 1.66.0=0.267

Q: What is the value of the exponent in the answer? 104 (10')(10-7) 12 O 10 O-2

A: We are given the following exponent:

Q: Convert 7.61 x 10-3 m to the equivalent length in nanometers. 7.61 x 10-3 m = nm * TOOLS x10

A: Given : 7.61 × 10-3 m To find : Equivalent length in nanometres Solution : Unit conversion is one of…

Q: PREFIX MEANING kilo-[KILL-uh] hecto-[HEC-tuh] one thousand (1,000) one hundred (100) each, larger by…

A: Since you have posted question with multiple sub-parts, we are entitled to answer the first 3 only.

Q: Calculate the volume (in mL) of 20.g of ethyl alcohol. The density of ethyl alcohol is 0.789 g/mL…

A: We know that ; Density (D)  = Mass of substance (M) / volume (V) By using this we can calculate the…

Q: 2. Volume of a 400 mL Beaker (2 methods) Indirect Method (completely fill the beaker with water and…

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Q: Calculate the surface area in nm^2 of water contained in a watch glass with a diameter of 9.0cm. The…

A: Given,Diameter = 9.0cmArea = πr2 and diameter 2r

Q: Convert 1010 nm to meters.

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Q: What is the length of the nail reported to the correct number of significant figures? Centimeters…

A: Given, The length from the end to last tip of nail falls between length 0 to 4.5 cm of scale.

Q: The line described by a linear regression attempts to a. pass through as many points as possible.…

A: The regression line is used to study the relationship among two or more variables and observe the…

Q: Convert 1 PSI (pound square inch) to PSF (pound square feet) :

A: Given :-   1 psi pressure To convert :-  1 psi to psf

Q: What is the number of significant figures does the sum of the following contain   + 5.652 , the…

A: The operations given are, 1) 1 + 5.652  2) 0.3 + 5.652

Q: Type the number 8.75 x 10-4 in standard notation. Express your answer using standard notation.

A: Standard notation means number written in extended form.

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.